Climatic change in a high-altitude alpine area suggested by the isotopic composition of cold basal glacier ice

For the first time, a cold ice cover of a summit in the central Swiss Alps has been sampled from the surface to the bed for determining its isotopic composition in δD and δ18O. Results of the analyses show a striking decrease of δ-values with depth. The δ-value differences are greater than those exp...

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Bibliographic Details
Main Authors: Lorrain, Reginald, Haeberli, Wilfried
Format: Article in Journal/Newspaper
Language:English
Published: 1990
Subjects:
Online Access:http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/94848
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Summary:For the first time, a cold ice cover of a summit in the central Swiss Alps has been sampled from the surface to the bed for determining its isotopic composition in δD and δ18O. Results of the analyses show a striking decrease of δ-values with depth. The δ-value differences are greater than those explicable by a direct temperature effect, but a substantial increase in melt water percolation through the firn since the formation of the deepest ice layer may explain the situation of this high-altitude ice. -Authors SCOPUS: NotDefined.j info:eu-repo/semantics/published